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Finding the Third Proportional to 29,989 and 64,132

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Solution

The third proportional to 29,989 and 64,132 is: 137,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,989 : 64,132 = 64,132 : x
  2. Step 2: Convert to fraction form
    29,989/64,132 = 64,132/x
  3. Step 3: Cross multiply
    29,989x = 64,132 × 64,132
  4. Step 4: Simplify right side
    29,989x = 4,112,913,424
  5. Step 5: Solve for x
    x = 4,112,913,424/29,989
  6. Step 6: Final answer
    x = 137,147.40

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.